Victus文献2014. Comparison of the anterior capsulotomy edge created by manual capsulorhexis and 2 femtosecond laser platforms.pdfVIP

LABORATORY SCIENCE Comparison of the anterior capsulotomy edge created by manual capsulorhexis and 2 femtosecond laser platforms: Scanning electron microscopy study Khaled Al Harthi, MD, Sami Al Shahwan, MD, Abdulelah Al Towerki, MD, P. Pat Banerjee, PhD, Ashley Behrens, MD, Deepak P. Edward, MD PURPOSE: To compare the scanning electron microscopy (SEM) features of the anterior capsule edge created by continuous curvilinear capsulorhexis (CCC) and femtosecond laser–assisted capsulotomy using angular second moment and contrast. SETTING: King Khaled Eye Specialist Hospital, Riyadh, Kingdom of Saudi Arabia. DESIGN: Prospective comparative series. METHODS: Anterior capsule specimens following CCC (n Z 10) or femtosecond laser–assisted capsulotomy using 2 platforms (Lensx, n Z 9, and Victus, n Z 10) were studied by SEM. Irregu- larity of the capsule edge was quantified using 2 parameters (angular second moment and contrast) using ImageJ software. The clinical features and laser parameters were correlated with angular sec- ond moment and contrast. RESULTS: By SEM, the femtosecond laser–assisted capsulotomy edge surfaces created by both lasers showed marked irregularity compared with the smooth edge of the CCC. The angular second moment and contrast measures for both lasers differed significantly from those obtained for CCC (P.001). There was no between-laser difference in angular second moment and contrast measures. The angular second moment showed only a weak negative correlation with increasing laser power, whereas contrast show